Selection and Maintenance Guide for Protective Gate Valves

Protective gate valve is an important valve equipment widely used in pipeline systems in industries such as petroleum, chemical, and power. When selecting and maintaining protective gate valves, multiple factors need to be considered to ensure their normal operation and extend their service life. The following is a selection and maintenance guide for protective gate valves:

1、 Selection Guide

1. Working medium:

-Determine the type of medium that the valve will control (such as water, oil, gas, chemical liquid, etc.), and select suitable materials (such as cast iron, stainless steel, alloys, etc.).

2. Pressure and temperature:

-Understand the working pressure and temperature of the pipeline system, and select valves that meet the corresponding pressure rating and temperature range.

3. Connection method:

-Select valves based on the connection method of the pipeline (such as flange connection, threaded connection, welding, etc.).

4. Caliber:

-Select the appropriate valve diameter based on the diameter of the pipeline to ensure that the flow demand is met.

5. Driving mode:

-Choose manual, electric, or pneumatic drive modes as needed, considering the convenience and reliability of operation.

6. Valve type:

-There are different types of protective gate valves (such as rising stem, hidden stem, etc.), and the appropriate type should be selected according to the specific application.

2、 Maintenance Guide

1. Regular inspection:

-Regularly inspect the appearance, sealing, and operational flexibility of valves, and promptly address any issues found.

2. Lubrication and maintenance:

-For valves that require lubrication, regularly add lubricating oil to ensure smooth movement of valve components.

3. Cleaning:

-Keep the valve and its surrounding environment clean to prevent dirt from entering the valve and affecting its performance.

4. Tightening inspection:

-Regularly check the fasteners of the valve to ensure no looseness, and tighten them if necessary.

5. Seals:

-Regularly inspect and replace seals according to usage to prevent leakage.

3、 Summary

The selection and maintenance of protective gate valves are key factors in ensuring the reliable operation of pipeline systems. Through scientific selection and regular maintenance, the service life of valves can be effectively extended, the failure rate can be reduced, and the overall system reliability can be improved.